Revision: 6888
Author: [email protected]
Date: Tue Feb 22 03:21:15 2011
Log: Improve parseInt.
Review URL: http://codereview.chromium.org/6546055
http://code.google.com/p/v8/source/detail?r=6888
Modified:
/branches/bleeding_edge/src/v8natives.js
=======================================
--- /branches/bleeding_edge/src/v8natives.js Tue Feb 22 01:14:47 2011
+++ /branches/bleeding_edge/src/v8natives.js Tue Feb 22 03:21:15 2011
@@ -92,7 +92,7 @@
// ECMA-262 - 15.1.2.2
function GlobalParseInt(string, radix) {
- if (IS_UNDEFINED(radix)) {
+ if (IS_UNDEFINED(radix) || radix === 10 || radix === 0) {
// Some people use parseInt instead of Math.floor. This
// optimization makes parseInt on a Smi 12 times faster (60ns
// vs 800ns). The following optimization makes parseInt on a
@@ -105,7 +105,7 @@
// Truncate number.
return string | 0;
}
- radix = 0;
+ if (IS_UNDEFINED(radix)) radix = 0;
} else {
radix = TO_INT32(radix);
if (!(radix == 0 || (2 <= radix && radix <= 36)))
--
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